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About Gears
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Compare gear types, measure pitch and module, calculate mounting distance, increase speed or torque, and more.
High-Power Metal Helical Gears
Crossed Gears
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Crossed helical gears, also known as screw gears, can be configured to transmit motion at a 90° angle or in a straight line. To transmit motion at a 90° angle, pair two gears with the same tooth direction. To transmit motion in a straight line, make sure to get one left-hand and one right-hand gear.
For gears to mesh correctly, they must have the same pressure angle and pitch/module. To change speed and torque in your assembly, pair two gears with different numbers of teeth.
Hub | Keyway | Left-Hand Teeth | Right-Hand Teeth | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Gear Module | No. of Teeth | Helix Angle | Gear Pitch Dia. | OD | Face Wd. | Dia. | Wd. | Bore Type | For Shaft Dia. | Wd. | Dp. | Material | Tooth Heat Treatment | Each | Each | ||||
20° Pressure Angle | ||||||||||||||||||||
| — | 1 | 13 | 45° | 18.4 mm | 20.38 mm | 10 mm | 15 mm | 10 mm | Round Bore | 6 mm | — | — | Black-Oxide 1045 Carbon Steel | Not Hardened | 3598N289 | 000000 | 3598N291 | 000000 | ||
| — | 1 | 26 | 45° | 36.8 mm | 38.77 mm | 10 mm | 30 mm | 10 mm | Round Bore | 10 mm | — | — | Black-Oxide 1045 Carbon Steel | Not Hardened | 3598N296 | 00000 | 3598N297 | 00000 | ||
| — | 1 | 30 | 45° | 42.4 mm | 44.43 mm | 10 mm | 35 mm | 10 mm | Round Bore | 10 mm | — | — | Black-Oxide 1045 Carbon Steel | Not Hardened | 3598N298 | 00000 | 3598N299 | 00000 | ||
| — | 1.5 | 10 | 45° | 21.2 mm | 24.21 mm | 15 mm | 16 mm | 10 mm | Round Bore | 8 mm | — | — | Black-Oxide 1045 Carbon Steel | Not Hardened | 3598N276 | 00000 | 3598N277 | 00000 | ||
| — | 1.5 | 13 | 45° | 27.6 mm | 30.58 mm | 15 mm | 23 mm | 10 mm | Round Bore | 10 mm | — | — | Black-Oxide 1045 Carbon Steel | Not Hardened | 3598N278 | 00000 | 3598N279 | 00000 | ||
| — | 1.5 | 26 | 45° | 55.2 mm | 58.15 mm | 15 mm | 40 mm | 10 mm | Round Bore | 12 mm | — | — | Black-Oxide 1045 Carbon Steel | Not Hardened | 3598N285 | 00000 | 3598N286 | 00000 | ||
14 1/2° Pressure Angle | ||||||||||||||||||||
| 16 | — | 16 | 45° | 1" | 1.09" | 1/2" | 0.86" | 0.5" | Keyed Bore with Set Screw | 1/2" | 0.125" | 0.062" | 1137 Carbon Steel | Hardened | 2585N11 | 00000 | 2585N12 | 00000 | ||
| 16 | — | 24 | 45° | 1 1/2" | 1.59" | 1/2" | 1.37" | 0.5" | Keyed Bore with Set Screw | 5/8" | 0.187" | 0.094" | 1137 Carbon Steel | Hardened | 2585N13 | 000000 | 2585N14 | 000000 | ||
| 16 | — | 32 | 45° | 2" | 2.09" | 1/2" | 1.87" | 0.5" | Keyed Bore with Set Screw | 5/8" | 0.187" | 0.094" | 1137 Carbon Steel | Hardened | 2585N15 | 000000 | 2585N16 | 000000 | ||
| 16 | — | 48 | 45° | 3" | 3.09" | 1/2" | 2.5" | 0.5" | Keyed Bore with Set Screw | 5/8" | 0.187" | 0.094" | 1137 Carbon Steel | Hardened | 2585N17 | 000000 | 2585N18 | 000000 | ||
| 12 | — | 18 | 45° | 1 1/2" | 1.62" | 3/4" | 1.34" | 0.5" | Keyed Bore with Set Screw | 5/8" | 0.187" | 0.094" | 1137 Carbon Steel | Hardened | 2585N22 | 000000 | 2585N23 | 000000 | ||
Parallel Gears
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Pair two parallel gears to transmit motion in a straight line or a gear with a rack to convert rotary motion to linear motion. Make sure mating components have different tooth directions.
For gears to mesh correctly, they must have the same pressure angle and pitch/module. To change speed and torque in your assembly, pair two gears with different numbers of teeth.
Hub, mm | Left-Hand Teeth | Right-Hand Teeth | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Module | No. of Teeth | Helix Angle | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Dia. | Wd. | Bore Type | For Shaft Dia., mm | Material | Tooth Heat Treatment | Each | Each | ||||
20° Pressure Angle | |||||||||||||||||
| 1 | 20 | 21 1/2° | 20 | 22 | 8 | 17 | 10 | Round Bore | 6 | 4140 Alloy Steel | Hardened | 3598N159 | 000000 | 3598N161 | 000000 | ||
| 1 | 30 | 21 1/2° | 30 | 32 | 8 | 25 | 10 | Round Bore | 10 | 4140 Alloy Steel | Hardened | 3598N171 | 000000 | 3598N172 | 000000 | ||
| 1 | 44 | 21 1/2° | 44 | 46 | 8 | 30 | 10 | Round Bore | 10 | 4140 Alloy Steel | Hardened | 3598N182 | 000000 | 3598N183 | 000000 | ||
Parallel Gear Racks
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Parallel Gear on Gear Rack (Sold Separately) |
Pair these racks with parallel helical gears that have an opposite tooth direction to convert rotary motion to linear motion.
